Types of Waves
Q. Explain the differences between the sounds of a cello and a violin in terms of frequency, pitch and time period.
A string connected to the end of the tuning fork kept in a horizontal position, will execute _______.
a parallel wave motion
a transverse wave motion
a damped oscillation
a circular wave motion
Q. Particles oscillate perpendicular to the direction of wave motion in
Q. In which of the following media can sound travel as a transverse wave?
Q. If the amplitude of a sound is tripled, What will be the effect on its loudness?
- Increases four times
- Decreases four times
- Increases six times
- Decreases six times
Q. Loudness is proportional to the square of the amplitude of a sound wave.
A bird makes a high-pitched sound whereas a lion makes a low-pitched roar. So, the frequency of sound made by lion is ______ that of bird.
- None of the above
Q. If the loudness of sound exceeds
, it can cause harm to the human ear.
- 50 dB
- 75 dB
- 80 dB
Q. The frequency of a vibrating body is 5 Hz. Calculate its time period?
- 0.1 s
- 0.2 s
- 0.8 s
- 0.4 s
Q. Which of the following are sources of noise pollution?
- Heavy machines
- Loud speakers